Results 21 to 30 of about 78,011 (319)

The biosynthesis of cholesterol in the developing chick embryo*

open access: yesJournal of Lipid Research, 1962
Mevalonic acid-2-C14 was injected into the yolk of incubating fertile hens' eggs on the sixth day of incubation. A nonsaponifiable fraction (NSF) containing labeled components was isolated from the yolk sac and from the embryo throughout the remainder of
Pat W. Camerino, Lemuel D. Wright
doaj   +1 more source

Vascular remodeling of the mouse yolk sac requires hemodynamic force [PDF]

open access: yes, 2007
The embryonic heart and vessels are dynamic and form and remodel while functional. Much has been learned about the genetic mechanisms underlying the development of the cardiovascular system, but we are just beginning to understand how changes in heart ...
Chen, Ju   +5 more
core   +1 more source

Which parameters – rates of survival or growth – determine the best moment for stocking trout larvae?

open access: yesArchives of Polish Fisheries, 2015
The aim of this study was to determine the best moment to stock trout, Salmo trutta L., larvae into the wild. This goal was accomplished by determining weekly changes in the growth parameters of larvae that were fed in seven variants: on the day of 2/3 ...
Domagała Józef   +2 more
doaj   +1 more source

The mammalian yolk sac placenta [PDF]

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2008
AbstractThere are three fetal membranes in mammals, namely the yolk sac, allantois and amnion, but only the first two form a placenta. In Monotremata (monotremes), Marsupialia (marsupials) and Placentalia (eutherians), the yolk sac transfers nutrients originating from uterine glandular secretion or the maternal blood.
Marilyn B. Renfree, Claudia Freyer
openaire   +3 more sources

A sinonasal yolk sac tumor in an adult [PDF]

open access: yesJournal of Pathology and Translational Medicine, 2022
Yolk sac tumors (YSTs), which are also called endodermal sinus tumors, are malignant tumors of germ cell origin. These tumors usually occur in the gonads, but 20% of cases have been reported at extragonadal sites. The head and neck is a rarely affected region that accounts for just 1% of all malignant tumors of germ cell origin. In addition, YSTs arise
Jaehoon Shin   +3 more
openaire   +3 more sources

Correlation of yolk sac volume obtained by three-dimensional ultrasonography with the gestational age at 7-10 weeks utilizing the multiplanar method [PDF]

open access: yes, 2009
OBJECTIVE: To evaluate the correlation between the yolk sac volume measured by three-dimensional ultrasonography with gestational age at 7-10 weeks.
Araujo Júnior, Edward   +5 more
core   +3 more sources

The zebrafish xenograft platform-A novel tool for modeling KSHV-associated diseases [PDF]

open access: yes, 2019
Kaposi\u27s sarcoma associated-herpesvirus (KSHV, also known as human herpesvirus-8) is a gammaherpesvirus that establishes life-long infection in human B lymphocytes.
Berman, Jason N   +12 more
core   +2 more sources

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

open access: yesFrontiers in Marine Science, 2021
Salinity intrusion in coastal areas due to climate change is alarming. In this study, the effects of salinity on embryonic and larval development of striped catfish (Pangasianodon hypophthalmus) were studied experimentally.
Farzana Hossain   +6 more
doaj   +1 more source

Yolk Sacs in Twin Pregnancy [PDF]

open access: yesActa geneticae medicae et gemellologiae: twin research, 1998
AbstractOBJECTIVE. The purpose of this study was to evaluate the relationship between the yolk sacs separated or not separated by septum and chorionicity twin pregnancies scanned early in the first trimester, and the relation between size and morphologic features of the yolk sac and the outcome of twin pregnancies.RESULTS.
openaire   +4 more sources

Deficiency of autotaxin/lysophospholipase D results in head cavity formation in mouse embryos through the LPA receptor-Rho-ROCK pathway [PDF]

open access: yes, 2010
Autotaxin, encoded by the Enpp2 gene, generates lysophosphatidic acid (LPA) extracellularly, eliciting various cellular responses through specific LPA receptors.
Keino-Masu Kazuko   +4 more
core   +1 more source

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